<div id="top_nav">
  	{% block top_nav %}
  	<a href="/" class="active"><span>Home</span></a>
	<a href="/user-manage" ><span>用户管理</span></a>
	<a href="/nav-manage" ><span>导页航管理</span></a>
	<a href="/other-manage" ><span>其他业务管理</span></a>
    <a href="/history" ><span>业务查询</span></a>
    {% endblock top_nav %}
</div>
<div id="sec_nav">
  	{% block sec_nav %}
  	<a href="#"><span>新闻通知</span></a>
	<a href="#"><span>World</span></a>
	<a href="#"><span>Science</span></a>
	<a href="#"><span>Gaming</span></a>
    {% endblock sec_nav %}
</div>